<html>
  <head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
    <title>小黑记事本</title>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
    <meta name="robots" content="noindex, nofollow" />
    <meta name="googlebot" content="noindex, nofollow" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="stylesheet" type="text/css" href="./css/index.css" />
  </head>

  <body>
    <!-- 主体区域 -->
    <section id="todoapp">
      <!-- 输入框 -->
      <header class="header">
        <h1>小黑记事本</h1>
        <input
          autofocus="autofocus"
          autocomplete="off"
          placeholder="请输入任务"
          class="new-todo"
          v-model="nowTxt"
          @keyup.enter="addTxt"
        />
      </header>
      <!-- 列表区域 -->
      <section class="main">
        <ul class="todo-list">
          <li class="todo" v-for="(txt,index) in txtList">
            <div class="view">
              <span class="index">{{index+1}}</span> <label @click="clickTxt(txt)">{{txt}}</label>
              <button class="destroy" @click="deleteTxt(index)"></button>
            </div>
          </li>
        </ul>
      </section>
      <!-- 统计和清空 -->
      <footer class="footer" v-show="txtList.length!=0">
        <span class="todo-count"> <strong>{{txtList.length}}</strong> items left </span>
        <button class="clear-completed" @click="clearTxt">
          Clear
        </button>
      </footer>
    </section>
    <!-- 底部 -->
    <footer class="info">
      <p>
        <a href="#"
          ><img src="./img/log.png" alt=""
        /></a>
      </p>
    </footer>
    <!-- 开发环境版本，包含了有帮助的命令行警告 -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
      var app = new Vue({
        el:"#todoapp",
        data:{
          cont:1,
          nowTxt:"",
          txtList:["吃桃桃"]
        },
        methods:{
          addTxt:function(){
            this.txtList.push(this.nowTxt)
            this.nowTxt=""
          },
          deleteTxt:function(idx){
            this.txtList.splice(idx,1)  //（从哪删，删几个）
          },
          clearTxt:function(idx){
            this.txtList=[]
          },
          clickTxt:function(txt){
            this.nowTxt=txt
          }
        }
      })
    </script>
  </body>
</html>
